/* USER CODE BEGIN Header */
/**
  ******************************************************************************
  * @file           : main.c
  * @brief          : Main program body
  ******************************************************************************
  * @attention
  *
  * Copyright (c) 2025 STMicroelectronics.
  * All rights reserved.
  *
  * This software is licensed under terms that can be found in the LICENSE file
  * in the root directory of this software component.
  * If no LICENSE file comes with this software, it is provided AS-IS.
  *
  ******************************************************************************
  */
/* USER CODE END Header */
/* Includes ------------------------------------------------------------------*/
#include "main.h"
#include "dma.h"
#include "i2c.h"
#include "tim.h"
#include "usart.h"
#include "gpio.h"

/* Private includes ----------------------------------------------------------*/
/* USER CODE BEGIN Includes */
#include "oled.h"
#include <string.h>
/* USER CODE END Includes */

/* Private typedef -----------------------------------------------------------*/
/* USER CODE BEGIN PTD */
extern DMA_HandleTypeDef hdma_usart1_rx;
/* USER CODE END PTD */

/* Private define ------------------------------------------------------------*/
/* USER CODE BEGIN PD */

/* USER CODE END PD */

/* Private macro -------------------------------------------------------------*/
/* USER CODE BEGIN PM */

/* USER CODE END PM */

/* Private variables ---------------------------------------------------------*/

/* USER CODE BEGIN PV */
  uint8_t recievedata[50];
  uint16_t pwm_value = 0;
  uint8_t pwm_direction = 0;
  uint8_t speed = 0;
/* USER CODE END PV */

/* Private function prototypes -----------------------------------------------*/
void SystemClock_Config(void);
/* USER CODE BEGIN PFP */

/* USER CODE END PFP */

/* Private user code ---------------------------------------------------------*/
/* USER CODE BEGIN 0 */
void HAL_UARTEx_RxEventCallback(UART_HandleTypeDef *huart, uint16_t Size)
{
  if(huart == &huart1)
  {
    HAL_UART_Transmit_DMA(&huart1,recievedata,sizeof(recievedata));
    HAL_UARTEx_ReceiveToIdle_DMA(&huart1,recievedata,sizeof(recievedata));
    __HAL_DMA_DISABLE_IT(&hdma_usart1_rx,DMA_IT_HT);
  }
}

void HAL_TIM_PeriodElapsedCallback(TIM_HandleTypeDef *htim)
{
  if(htim == &htim3)
  {
    if(pwm_direction == 1)
    {
      if(speed == 1)
      {
        pwm_value++;
      }else if(speed == 2)
      {
        pwm_value += 2;
      }else if(speed == 3)
      {
        pwm_value +=3;
      }
      
    }
    
    if(pwm_direction == 0 && pwm_value >= 1)
    {
      if(speed == 1)
      {
        pwm_value--;
      }else if(speed == 2)
      {
        pwm_value -= 2;
      }else if(speed == 3)
      {
        pwm_value -=3;
      }
    }
    
    if(pwm_value > 1000)
    {
      pwm_direction = 0;
    }
    
    if(pwm_value <= 1)
    {
      pwm_direction = 1;
    }
    
    __HAL_TIM_SetCompare(&htim3,TIM_CHANNEL_1,pwm_value);
  }
}
/* USER CODE END 0 */

/**
  * @brief  The application entry point.
  * @retval int
  */
int main(void)
{

  /* USER CODE BEGIN 1 */

  /* USER CODE END 1 */

  /* MCU Configuration--------------------------------------------------------*/

  /* Reset of all peripherals, Initializes the Flash interface and the Systick. */
  HAL_Init();

  /* USER CODE BEGIN Init */

  /* USER CODE END Init */

  /* Configure the system clock */
  SystemClock_Config();

  /* USER CODE BEGIN SysInit */

  /* USER CODE END SysInit */

  /* Initialize all configured peripherals */
  MX_GPIO_Init();
  MX_DMA_Init();
  MX_TIM3_Init();
  MX_USART1_UART_Init();
  MX_I2C1_Init();
  /* USER CODE BEGIN 2 */
  HAL_Delay (200);
  OLED_Init();
  OLED_DisPlay_On();
  OLED_NewFrame();  
  HAL_TIM_PWM_Start(&htim3,TIM_CHANNEL_1);
  HAL_TIM_Base_Start_IT(&htim3);
  HAL_UARTEx_ReceiveToIdle_DMA(&huart1,recievedata,sizeof(recievedata));
  /* USER CODE END 2 */

  /* Infinite loop */
  /* USER CODE BEGIN WHILE */
  while (1)
  {
    /* USER CODE END WHILE */

    /* USER CODE BEGIN 3 */
    for(uint8_t i=0;i<=128;i++)
    {
      OLED_NewFrame();
      OLED_PrintString(128-2*i,45,"蒋朱锐 蒋朱锐",&font16x16,OLED_COLOR_NORMAL);
      OLED_DrawImage(0+2*i,0,&konglongimgImg,OLED_COLOR_NORMAL);
      OLED_DrawImage(40+2*i,0,&konglongimgImg,OLED_COLOR_NORMAL);
      OLED_ShowFrame();
      if(i>128)
      {
        i=0;
      }
    }
        
    if(recievedata[0]=='0')
    {
      speed = 1;
    }else if(recievedata[0]=='1')
    {
      speed=2;
    }else if(recievedata[0]=='2')
    {
      speed=3;
    }
  }
  /* USER CODE END 3 */
}

/**
  * @brief System Clock Configuration
  * @retval None
  */
void SystemClock_Config(void)
{
  RCC_OscInitTypeDef RCC_OscInitStruct = {0};
  RCC_ClkInitTypeDef RCC_ClkInitStruct = {0};

  /** Initializes the RCC Oscillators according to the specified parameters
  * in the RCC_OscInitTypeDef structure.
  */
  RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSE;
  RCC_OscInitStruct.HSEState = RCC_HSE_ON;
  RCC_OscInitStruct.HSEPredivValue = RCC_HSE_PREDIV_DIV1;
  RCC_OscInitStruct.HSIState = RCC_HSI_ON;
  RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
  RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE;
  RCC_OscInitStruct.PLL.PLLMUL = RCC_PLL_MUL9;
  if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK)
  {
    Error_Handler();
  }

  /** Initializes the CPU, AHB and APB buses clocks
  */
  RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK|RCC_CLOCKTYPE_SYSCLK
                              |RCC_CLOCKTYPE_PCLK1|RCC_CLOCKTYPE_PCLK2;
  RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
  RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
  RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV2;
  RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1;

  if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_2) != HAL_OK)
  {
    Error_Handler();
  }
}

/* USER CODE BEGIN 4 */

/* USER CODE END 4 */

/**
  * @brief  This function is executed in case of error occurrence.
  * @retval None
  */
void Error_Handler(void)
{
  /* USER CODE BEGIN Error_Handler_Debug */
  /* User can add his own implementation to report the HAL error return state */
  __disable_irq();
  while (1)
  {
  }
  /* USER CODE END Error_Handler_Debug */
}
#ifdef USE_FULL_ASSERT
/**
  * @brief  Reports the name of the source file and the source line number
  *         where the assert_param error has occurred.
  * @param  file: pointer to the source file name
  * @param  line: assert_param error line source number
  * @retval None
  */
void assert_failed(uint8_t *file, uint32_t line)
{
  /* USER CODE BEGIN 6 */
  /* User can add his own implementation to report the file name and line number,
     ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */
  /* USER CODE END 6 */
}
#endif /* USE_FULL_ASSERT */
